LibWeb: Support nullable EventListener parameters in WrapperGenerator

The internal C++ function will now receive a RefPtr<EventListener> for
'EventListener?' and a NonnullRefPtr<EventListener> for 'EventListener'.

Examples of this are addEventListener() and removeEventListener(), which
both have nullable callback parameters.

1 files changed, 2 insertions, 2 deletions

diff --git a/Userland/Libraries/LibWeb/DOM/EventTarget.h b/Userland/Libraries/LibWeb/DOM/EventTarget.h
index af1a1d7b0c..d74d633fec 100644
--- a/Userland/Libraries/LibWeb/DOM/EventTarget.h
+++ b/Userland/Libraries/LibWeb/DOM/EventTarget.h
@@ -45,8 +45,8 @@ public:
     void ref() { ref_event_target(); }
     void unref() { unref_event_target(); }
 
-    void add_event_listener(const FlyString& event_name, NonnullRefPtr<EventListener>);
-    void remove_event_listener(const FlyString& event_name, NonnullRefPtr<EventListener>);
+    void add_event_listener(const FlyString& event_name, RefPtr<EventListener>);
+    void remove_event_listener(const FlyString& event_name, RefPtr<EventListener>);
 
     void remove_from_event_listener_list(NonnullRefPtr<EventListener>);